[PATCH v2 1/2] arm64: dts: qcom: x1p42100-lenovo-thinkbook-16: force usb2-only mode on usb_1_ss2_dwc3

From: Jens Glathe via B4 Relay
Date: Sat Jan 03 2026 - 04:01:06 EST


From: Jens Glathe <jens.glathe@xxxxxxxxxxxxxxxxxxxxxx>

The usb_1_ss2 complex has 2 phys, usb_1_ss2_hsphy and usb_1_ss2_qmpphy. On this
laptop, they are used for different peripherals: The hsphy for the fingerprint
reader, the qmpphy to drive a hdmi bridge. The normal logical wiring for the dwc3
controller is to both phys. Delete the port@1 to the qmpphy.

Signed-off-by: Jens Glathe <jens.glathe@xxxxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/x1p42100-lenovo-thinkbook-16.dts | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1p42100-lenovo-thinkbook-16.dts b/arch/arm64/boot/dts/qcom/x1p42100-lenovo-thinkbook-16.dts
index 3186e79e862de67cbda48a4b85a459e6e965ba65..b4a40904f0a01b36ff2fc72e801a5fe7d6971e2a 100644
--- a/arch/arm64/boot/dts/qcom/x1p42100-lenovo-thinkbook-16.dts
+++ b/arch/arm64/boot/dts/qcom/x1p42100-lenovo-thinkbook-16.dts
@@ -1560,6 +1560,8 @@ &usb_1_ss2_dwc3 {
maximum-speed = "high-speed";
phys = <&usb_1_ss2_hsphy>;
phy-names = "usb2-phy";
+
+ /delete-property/ port@1;
};

&usb_1_ss2_hsphy {

--
2.51.0